A worm gear, in which the axis is placed as standard in a ball bearing. It is a transmission with the lead axis on the left side seen from the side of the motor drive axle. The gear reducer is manufactured with a ratio from 5: 1 to 75: 1 and can be combined with DC, BLDC and AC motors manufactured by Dunkermotoren GmbH. The maximum rotating continuous moment that can be carried is 75Ncm and its weight is 0.2kg. The radial force attached to the axis can not exceed 200N, axial - 100N.